Gaya APA
Winter, C, B, M, P, A, M.
(1984).
Student practice book 3
(
1)
.
London:
Macmillan.
Gaya MLA
Winter, Cristopher, Bury,, Mike, Potter, And, Michael.
"Student practice book 3".
1
London:
Macmillan,
1984.
Buku Analog.